package zlatan_demo05_array


import scala.collection.mutable.ArrayBuffer
object ClassDemo03 {

  def main(args: Array[String]): Unit = {
  val arr1=ArrayBuffer("Hadoop","Scala","flink")
  arr1+="flume"  //+=添加元素
  arr1-="Hadoop"

  arr1 ++=ArrayBuffer("HIVE","SQOOP")

    println(arr1)
  }
}
